🌬️ CoreCarbon 4-Pack Pre-Filter for Honeywell Air Genius 3-6 Purifier - HFD300, HFD310, HFD314, HFD320, HD320, HFD323CV1, HFD323-TGT, HFD324, HFD360B Review

Not quite a "precise" fit as you can see in the image. The original K pre-filter sits on top of this product (some dust) and is about 1/4" wider and about 1/8" longer (length not shown). It doesn't hurt as that pre-filter is optional and the main washable HEPA filter catches whatever comes through the sides. I'm deducting a few stars because it's not an exact replica of the Honeywell K filter, but the price is high, so 3 stars is a good rating for it.

Die Filters fit perfectly, although I'm not sure how well they work. I have 2 identical air purifiers and this time after a few months I didn't notice much of a difference. Unfortunately I don't see as much efficiency as with the previous filters I've used before they got rid of every smell instantly and you could see the dust picked up right away. For some reason I don't see it with these. I really wish I had as it is a slightly cheaper alternative to the original brands that I got with my…

Not quite an "exact" fit as you can see in the picture. The original K pre-filter sits on top of this product (some dust) and is about 1/4" wider and about 1/8" longer (length not shown). It doesn't hurt as that pre-filter is optional and the main washable HEPA filter catches whatever comes through the sides. I'm deducting a few stars because it's not an exact replica of the Honeywell K filter, but the price is high, so 3 stars is a good rating for it.

3 stars just because they said they "fit right in" when in fact they are smaller ( about a quarter of an inch) in two dimensions than a standard "K" filter. I have received several replies on this from both Revain and the supplier. Responses were generally professional and showed a keen interest in improving my experience. The seller sent me replacement filters of the right size as soon as they knew what happened and the filters are of good quality. I would recommend them to my friends…

This is an updated review of the CoreCarbon Exact Fitment 4-Piece Kit used with the Honeywell AirGenius 4 (HFD310). I have since changed my rating from 1 star to 5 stars. I bought these filters in mid-March and had a sizing issue where the filters were slightly shorter on the sides creating a gap wide enough to affect filter efficiency. Since I saw that they didn't fit, I returned them. About a week later, a CoreCarbon rep contacted me to say their filter sizes were being updated and made more…